River dolphin - Wikipedia
River dolphins are a polyphyletic group of fully aquatic mammals that reside exclusively in freshwater or brackish water. They are an informal grouping of dolphins, which itself is a paraphyletic group within the infraorder Cetacea. Extant river dolphins are placed in two superfamilies, Platanistoidea and Inioidea.
River dolphin | Types & Facts | Britannica
river dolphin, any of six species of small, usually freshwater aquatic mammals that are related to whales (order Cetacea). These dolphins are found in rivers of south-central Asia, China, and South America and in the coastal waters of Brazil, Argentina, and Uruguay.
River dolphins on the brink: Where the enigmatic river dolphins …
Discover why river dolphins are important, how they differ from marine dolphins, and the differences between the species are in our expert guide by the WWF.
Freshwater dolphin species and facts | Stories | WWF - World …
2022年4月14日 · Swimming through rivers in parts of South America and Asia is what one might consider an unexpected figure: the dolphin. It joins the ranks of the shark and the sea turtle as some of the oldest creatures on Earth.
River dolphins - Whale & Dolphin Conservation USA
2022年5月10日 · River dolphins are among the most seriously endangered of all dolphins because they live in freshwater river systems, where space is far more limited than oceanic waters; and they live beside millions of people who compete for the same natural resources.
Amazon River Dolphin (Pink Dolphins) | Species | WWF - World …
The Amazon river dolphin, also known as the pink river dolphin or boto, lives only in freshwater. It is found throughout much of the Amazon and Orinoco river basins in Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, and Venezuela.
River Dolphins Are Truly Unique and Disappearing
2023年5月18日 · Many species of river dolphins, specifically, live in waterways spanning multiple continents and countries around the globe. Their unique habitats correlate with strange attributes and extraordinary behaviors not found in marine dolphins and other cetaceans.
Amazon river dolphin - Wikipedia
The Amazon river dolphin (Inia geoffrensis), also known as the boto, bufeo or pink river dolphin, is a species of toothed whale endemic to South America and is classified in the family Iniidae.
River Dolphins - WWF
There are only six extant species of river dolphins left in the world today and they are all endangered or critically endangered. This is because pollution, dams, shipping and bycatch have taken their toll on this iconic species.
Amazon River Dolphin (Boto) Facts - National Geographic
Into this seasonal sea, which remains for half the year, swims the Amazon river dolphin, or boto. Botos have the characteristic dolphin smile and, unlike their marine cousins, bulbous foreheads...